To make easier to use, we place small files on your device (for example your iPad or laptop) called cookies. Most big websites do this too.

Cookies improve things by:

  • remembering the things you’ve chosen while on our website, so you don’t have to keep re-entering them whenever you visit a new page
  • remembering data you’ve given (for example, your address) so you don’t need to keep entering it
  • measuring how you use the website so we can make sure it meets your needs.

By using our website, you agree that we can place these types of cookies on your device. 

We don’t use cookies on this website that collect information about what other websites you visit (often referred to as privacy intrusive cookies).

Our cookies aren’t used to identify you personally. They’re just here to make the site work better for you. You can manage and/or delete these files as you wish.

Find out more about how to manage cookies.

The table below explains the cookies we use and why:
CookieNamePurposeMore Information

Google Analytics

Google Tag Manager

Google Optimize













These cookies are used to collect information about how visitors use our site.

We use the information to compile reports and to help us improve the site.

The cookies collect information in an anonymous form. Data collected includes, number of visitors to the site, where visitors came to the site from, the pages they visited.

An overview of Google Analytics privacy


To opt out of being tracked by Google Analytics you can use their 'Opt out tool'.



This cookie is essential for various forms and web pages to operate. It is set upon site arrival and is deleted when you close your browser.

How and why session IDs are reused in ASP.NET - Microsoft

YouTube videos


This is a randomly generated number that identifies your browser.

When you close your browser



This session cookie is set to let Hotjar know whether that visitor is included in the sample which is used to generate Heatmaps, Funnels, Recordings, etc.

365 days

Siteimprove analytics





This cookie is used to help record visitors' use of the website.

This cookie is used purely to track the sequence of pages a visitor looks at during a visit to the site.

This cookie is used to determine if the user has accepted or declined cookies.

This cookie is set by the CloudFlare service to identify trusted web traffic.

1000 days

When you close your browser

When you close your browser


To opt out of being tracked by Google Analytics across all websites visit